![CNET News (HD) show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/031/845/small/cnet-news-hd.jpg)
Summary: Scientists at Caltech have developed what they say is the world's first electronic skin that doesn't need a battery. Why not? Because it runs on human sweat.
Summary: Scientists at Caltech have developed what they say is the world's first electronic skin that doesn't need a battery. Why not? Because it runs on human sweat.